<snapdata remixID="14160871"><project name="U5L2-Disease Simulation" app="Snap! 10.4.0, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="U5L2-Disease Simulation"><notes></notes><hidden></hidden><headers></headers><code></code><blocks><block-definition s="simulate disease, population: %&apos;population input&apos; percent infected: %&apos;percent initially infected input&apos; speed: %&apos;speed input&apos;" type="reporter" category="other"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="doDeclareVariables"><list><l>elapsed time</l><l>start time</l></list></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><custom-block s="initialize simulation %n %n %n"><block var="population input"/><block var="percent initially infected input"/><block var="speed input"/></custom-block><block s="show"></block><block s="doRepeat"><l>100</l><script><block s="doGotoObject"><l><option>random position</option></l></block><block s="createClone"><l><option>myself</option></l></block></script><comment w="136.66666666666666" collapsed="true">Create the clones.</comment></block><block s="hide"></block><block s="doSetVar"><l>start time</l><block s="reportDate"><l><option>time in milliseconds</option></l></block></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doWaitUntil"><block s="reportVariadicEquals"><list><block var="number infected"/><block var="population"/></list></block><comment w="135.33333333333334" collapsed="false">Wait until everyone is&#xD;infected.</comment></block><block s="doSetVar"><l>elapsed time</l><block s="reportQuotient"><block s="reportDifference"><block s="reportDate"><l><option>time in milliseconds</option></l></block><block var="start time"/></block><l>1000</l></block></block><block s="doBroadcast"><l>vanish</l><list></list></block><block s="doReport"><block var="elapsed time"/></block></script></block-definition><block-definition s="average time for disease spread with population size: %&apos;size&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="bubble"><l></l></block><block s="doReport"><block s="reportQuotient"><block s="reportCombine"><block s="reportMap"><block s="reifyReporter"><autolambda><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><block var="size"/><l>10</l><l>2</l></custom-block></autolambda><list></list></block><block s="reportNumbers"><l>1</l><l>10</l></block></block><block s="reifyReporter"><autolambda><block s="reportVariadicSum"><list><l></l><l></l></list></block></autolambda><list></list></block></block><l>10</l></block></block></script></block-definition><block-definition s="initialize clone" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doSwitchToCostume"><l>well</l></block><block s="doIf"><block s="reportVariadicLessThan"><list><block var="number infected"/><block s="reportVariadicProduct"><list><block var="population"/><block s="reportQuotient"><block var="percent initially infected"/><l>100</l></block></list></block></list></block><script><block s="doSetVar"><l>infected?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doSwitchToCostume"><l>sick</l></block><block s="doChangeVar"><l>number infected</l><l>1</l></block></script><list></list></block><block s="doGotoObject"><l><option>random position</option></l></block><block s="doFaceTowards"><l><option>random position</option></l></block></script></block-definition><block-definition s="touching infected person?" type="predicate" category="sensing"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doForEach"><l>neighbor</l><block s="reportGet"><l><option>neighbors</option></l></block><script><block s="doIf"><block s="reportVariadicAnd"><list><block s="reportNot"><block var="infected?"/></block><block s="reportVariadicAnd"><list><block s="reportTouchingObject"><block var="neighbor"/></block><block s="reportAskFor"><block var="neighbor"/><block var="infected?"/><list></list></block></list></block></list></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script><list></list></block></script><comment w="174.66666666666666" collapsed="false">Fill in the blank to check whether&#xD;this clone is touching an infected one.</comment></block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition><block-definition s="initialize simulation %&apos;pop&apos; %&apos;inf&apos; %&apos;sp&apos;" type="command" category="variables"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="doSetVar"><l>population</l><block var="pop"/><comment w="216.66666666666666" collapsed="true">Make global so &quot;when I start&quot; can use it.</comment></block><block s="doSetVar"><l>percent initially infected</l><block var="inf"/></block><block s="doSetVar"><l>speed</l><block var="sp"/></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doSetVar"><l>number infected</l><l>0</l></block><block s="doSetVar"><l>infected?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doSwitchToCostume"><l>well</l></block><block s="setScale"><l>50</l></block></script></block-definition><block-definition s="Collide WIth Sick?" type="predicate" category="variables"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doReport"><l></l></block></script></block-definition><block-definition s="CollideWithSick?" type="predicate" category="variables"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doForEach"><l>item</l><block s="reportGet"><l><option>neighbors</option></l></block><script><block s="doIf"><block s="reportVariadicAnd"><list><custom-block s="touching infected person?"></custom-block><block s="reportVariadicEquals"><list><block s="reportAttributeOf"><l><option>costume name</option></l><block var="item"/></block><l>sick</l></list></block></list></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script><list></list></block></script></block><block s="doChangeVar"><l>number infected</l><l>1</l><comment w="90" collapsed="false">add comment here...</comment></block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition></blocks><primitives></primitives><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" penlog="false" volume="100" pan="0" lines="round" ternary="false" hyperops="true" codify="false" inheritance="true" sublistIDs="false" id="254"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="255"></list></costumes><sounds><list struct="atomic" id="256"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="1"><sprite name="Sprite" idx="1" x="208.75" y="103.25" heading="192.34000000000003" scale="0.5" volume="100" pan="0" rotation="0" draggable="true" hidden="true" costume="1" color="80,80,80,1" pen="tip" id="261"><costumes><list id="262"><item><ref mediaID="Sprite_cst_well"></ref></item><item><ref mediaID="Sprite_cst_sick"></ref></item></list></costumes><sounds><list struct="atomic" id="263"></list></sounds><blocks></blocks><variables><variable name="infected?"><bool>false</bool></variable></variables><scripts><script x="30" y="30"><block s="receiveOnClone"></block><custom-block s="initialize clone"><comment w="90" collapsed="false">This block of code sets the initial setup of the stage, scattering 99 well people all around the stage and 1 infected, it then tells them to move in a random direction and you can watch how they interact with one another.</comment></custom-block><block s="doWaitUntil"><block var="clones ready?"/></block><block s="doUntil"><custom-block s="touching infected person?"></custom-block><script><block s="forward"><l>7</l></block><block s="bounceOffEdge"></block></script></block><block s="doUntil"><block s="reportVariadicOr"><list><block s="reportVariadicEquals"><list><block var="number infected"/><block var="population"/></list></block><block s="reportVariadicGreaterThan"><list><block var="number infected"/><block var="population"/></list></block></list></block><script><block s="doSetVar"><l>clones ready?</l><custom-block s="CollideWithSick?"></custom-block></block><block s="doSwitchToCostume"><l>sick</l></block></script></block><block s="doResetTimer"></block><block s="doUntil"><block s="reportVariadicEquals"><list><block var="number infected"/><block var="population"/></list></block><script><block s="doSetVar"><l>time relapsed</l><block s="getTimer"></block></block><block s="doShowVar"><l>time relapsed</l></block></script><comment w="90" collapsed="false">This block of code tells the program to stop running after all people are sick.</comment></block></script><script x="30" y="443.5000000000002"><block s="receiveGo"></block><block s="doWaitUntil"><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><l>100</l><l>1</l><l>2</l></custom-block></block></script></scripts></sprite><watcher scope="Sprite" var="infected?" style="normal" x="9.999999999999545" y="10.000000000000007" color="243,118,29" hidden="true"/><watcher var="number infected" style="normal" x="9.999999999999545" y="40.000001999999995" color="243,118,29"/><watcher var="population" style="normal" x="10" y="67.000002" color="243,118,29"/><watcher var="time relapsed" style="normal" x="11" y="11" color="243,118,29"/></sprites></stage><variables><variable name="number infected"><l>36</l></variable><variable name="population"><l>100</l></variable><variable name="percent initially infected"><l>1</l></variable><variable name="speed"><l>2</l></variable><variable name="clones ready?"><bool>true</bool></variable><variable name="time relapsed"><l>90.6</l></variable></variables></scene></scenes></project><media name="U5L2-Disease Simulation" app="Snap! 10.4.0, https://snap.berkeley.edu" version="2"><costume name="well" center-x="12" center-y="26" 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mediaID="Sprite_cst_well"/><costume name="sick" center-x="12" center-y="26" 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mediaID="Sprite_cst_sick"/></media></snapdata>